21226413

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{181}}^1$

素因数の和:325

約数の個数: 32

約数和(自身を含む): 31962112

約数和(自身を除く): 10735699

約数列:

[1, 3, 13, 31, 39, 93, 97, 181, 291, 403, 543, 1209, 1261, 2353, 3007, 3783, 5611, 7059, 9021, 16833, 17557, 39091, 52671, 72943, 117273, 218829, 228241, 544267, 684723, 1632801, 7075471, 21226413]

約数ペア:

[(1, 21226413), (3, 7075471), (13, 1632801), (31, 684723), (39, 544267), (93, 228241), (97, 218829), (181, 117273), (291, 72943), (403, 52671), (543, 39091), (1209, 17557), (1261, 16833), (2353, 9021), (3007, 7059), (3783, 5611)]